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Status published
High
CVE-2023-6291
Keycloak: redirect_uri validation bypass
Vulnerability Description
A flaw was found in the redirect_uri validation logic in Keycloak. This issue may allow a bypass of otherwise explicitly allowed hosts. A successful attack may lead to an access token being stolen, making it possible for the attacker to impersonate other users.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://access.redhat.com/errata/RHSA-2023:7854
- https://access.redhat.com/errata/RHSA-2023:7855
- https://access.redhat.com/errata/RHSA-2023:7856
- https://access.redhat.com/errata/RHSA-2023:7857
- https://access.redhat.com/errata/RHSA-2023:7858
- https://access.redhat.com/errata/RHSA-2023:7860
- https://access.redhat.com/errata/RHSA-2023:7861
- https://access.redhat.com/errata/RHSA-2024:0798
- https://access.redhat.com/errata/RHSA-2024:0799
- https://access.redhat.com/errata/RHSA-2024:0800
- https://access.redhat.com/errata/RHSA-2024:0801
- https://access.redhat.com/errata/RHSA-2024:0804
- https://access.redhat.com/security/cve/CVE-2023-6291
- https://bugzilla.redhat.com/show_bug.cgi?id=2251407
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Affected Vendor
Red Hat
View all reports →Affected Software
Red Hat build of Keycloak 22, Red Hat build of Keycloak 22.0.7, Red Hat Single Sign-On 7, Red Hat Single Sign-On 7.6 for RHEL 7, Red Hat Single Sign-On 7.6 for RHEL 8, Red Hat Single Sign-On 7.6 for RHEL 9, RHEL-8 based Middleware Containers, Single Sign-On 7.6.6, Migration Toolkit for Applications 6, Migration Toolkit for Applications 7, OpenShift Serverless, Red Hat Data Grid 8, Red Hat Decision Manager 7, Red Hat Fuse 7, Red Hat JBoss Data Grid 7, Red Hat JBoss Enterprise Application Platform 6, Red Hat Process Automation 7
Vulnerable Versions:
22.0.7-1, 22-6, 22-9, 0:18.0.11-2.redhat_00003.1.el7sso, 0:18.0.12-1.redhat_00001.1.el7sso, 0:18.0.11-2.redhat_00003.1.el8sso, 0:18.0.12-1.redhat_00001.1.el8sso, 0:18.0.11-2.redhat_00003.1.el9sso, 0:18.0.12-1.redhat_00001.1.el9sso, 7.6-38, 7.6.6-2, 7.6-41
Timeline
Official Publish:
January 26th, 2024
Last Modified:
November 11th, 2025
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L